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## https://sploitus.com/exploit?id=PACKETSTORM:163270
Discovery / credits: Malvuln - malvuln.com (c) 2021  
Original source: https://malvuln.com/advisory/21cd8bab6b3569f7b375a69a37e36c50.txt  
Contact: malvuln13@gmail.com  
Media: twitter.com/malvuln  
  
Threat: Trojan.Win32.SecondThought.ak  
Vulnerability: Insecure Permissions  
Description: The malware creates a dir with insecure permissions under c:\ drive and grants change (C) permissions to the authenticated user group. Standard users can rename the executable dropped by the malware to disable it or replace it with their own executable. Then wait for a privileged user to logon to the infected machine to potentially escalate privileges.  
Type: PE32  
MD5: 21cd8bab6b3569f7b375a69a37e36c50  
Vuln ID: MVID-2021-0257  
Dropped files: install113.exe   
Disclosure: 06/23/2021  
  
Exploit/PoC:  
C:\>cacls temporary  
C:\temporary BUILTIN\Administrators:(OI)(CI)(ID)F  
NT AUTHORITY\SYSTEM:(OI)(CI)(ID)F  
BUILTIN\Users:(OI)(CI)(ID)R  
NT AUTHORITY\Authenticated Users:(ID)C  
NT AUTHORITY\Authenticated Users:(OI)(CI)(IO)(ID)C  
  
  
C:\>dir temporary  
Volume in drive C has no label.  
  
Directory of C:\temporary  
  
06/16/2021 02:51 AM 0 install113.exe  
1 File(s) 0 bytes  
  
  
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